Elbow for respiratory mask



FIG. 1 is a front perspective view of an elbow for a respiratory maskaccording to an embodiment of our design;

FIG. 2 is a reverse perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a right side view thereof with the left side view being amirror image thereof.

The ornamental design for an elbow for respiratory mask, as shown.